"Using PostgreSQL with n8n Workflow Automation" matching MCP connectors:

Scan public websites for privacy, cookie, tracker, consent, policy, and disclosure risk signals. Start instantly with zero-auth Light mode—no account or API key required.

Per-transaction crypto trade validator for AI agents. Returns deterministic PROCEED / CAUTION / BLOCK verdicts using WaveGuard anomaly detection, history checks, and rug-pull risk analysis.

DNS and email security scanner with 80 MCP tools for SPF, DMARC, DNSSEC, SSL, and brand audits.

Query Microsoft Patch Tuesday security updates (MSRC) with EPSS and CISA KEV enrichment

Static MCP manifest and tool-policy security preflight with signed input-redacted receipts

Hash passwords with bcrypt and issue/verify JWT session tokens over A2A + MCP.

Viridis Verified: wrap any MCP server with tamper-evident delivery receipts + metered fees.

QRNG-seeded random bytes, seeds, and ML-KEM-768 keys with signed provenance receipts.

Self-destructing secret sharing for AI agents: encrypted burn links for credentials, plus an agent-to-agent dead-drop with exactly-once claim semantics. RAM-only, no database, open source (MIT). Source: https://github.com/mmmpym/flashpaper

Protect owners with private checks across 13.3B+ breach records and prioritized defenses.

Deterministic AI liability attribution with Bitcoin-anchored proof certificates.

Domain attribution and correlation for AI agents, with confidence and per-signal evidence.

No-account public website privacy risk scans with 20 new scans/day and free recent-result reuse.

Hosted endpoint for patch-tuesday-mcp: query Microsoft Patch Tuesday security updates (MSRC) with EPSS and CISA KEV enrichment. Free, no auth or API keys.

Public MCP digital twin with synthetic systems and an agent firewall. No customer data.

Pre-connect trust checks for AI agents and MCP servers using HVTracker's public trust registry.

Trust scoring for x402 endpoints — "should my agent pay this?" check_endpoint runs live diligence: x402 spec-compliance probe, price sanity vs market percentiles, payTo wallet on-chain activity (Base), directory presence, infra hygiene. Returns 0-100 score with per-check evidence. compare_price positions any price vs category market data. Pay-per-call via x402: $0.02/call USDC on Base, no account or API key. tools/list free.

Scan suspicious messages, URLs, and text for scams with AI. Free tier - no API key required.

Human-in-the-loop approval for agent actions, with verifiable action-bound receipts.

Hand off AI work with a signed Verification Receipt — an independent verifier proves it runs.